I am sure we will want to discover the truth and go buy he easy to read and well cited book to make your own study. She has a earned a PhD in nutrition. Written 500 articles, been on talk radio, on TV, in Time Magazine, Prevention Magazine and written up in the New York Times a couple times. Okay sure, so what did her book say? This is where it starts to get good...
IGF-1 can help slow this aging process down by increasing the telomere length of our DNA. Telomeres are a protective "cap" at the end of each strand of our DNA which prevents the DNA from becoming damaged. DNA becomes damaged as the telomeres grow shorter with age. As more DNA strands become damaged, cells in our bodies can no longer function properly which results in many medical conditions, diseases, and even death. This is how IGF-1 can help longevity. It does this by promoting healthy DNA strands to keep our cellular functions optimal.
Even sellers of deer antler products doubt that the products could deliver IGF-1. "IGF-1 is very unstable," Dean Nieves of Florida-based Bio Lab Naturals told the Baltimore Sun. "It could not exist outside of a very controlled environment." Nieves' company therefore markets the product as a nutritional supplement. "It is just packed with nutrients," he said.
A 2015 study published in Evidenced Based Complimentary and Alternative Medicine fed mice a diet containing 10 percent elk velvet extract (EVA) to test its effects on physical growth and bone development. Researchers measured the mice’s body weights, blood chemistry, kidney and testis/ovary functions, and bone traits weekly. They found that “Mean body weights were higher in the EVA group at 4–8 weeks in males, and at 5 weeks of age in females.” The mice fed EVA also experienced changes in kidney function and increased femoral bone length by 5 weeks old. Levels of alkaline phosphatase (ALP) increased in EVA group.

First, the following disclaimer: Products that are sold as supplements (as opposed to medications) are not regulated by the Food and Drug Administration so they are not tested for safety, efficacy or standardization. In other words, when you buy a supplement, there is no guarantee that what is in the bottle has been tested to see if it even contains the ingredient in question, let alone whether the ingredient actually does what it claims to. (That’s not a value judgment, just the facts.)